Here is the remaining schedule leading up to the first game on September 7th in the NFL
May
May 1
Deadline for Prior Club to send “May 1 Tender” to its unsigned Unrestricted Free Agents. If the player has not signed a Player Contract with a Club by July 22 or the first scheduled day of the first NFL training camp, whichever is later, he may negotiate or sign a Player Contract from that date until the Tuesday following the 10th weekend of the regular season, at 4:00 p.m., New York time, only with his Prior Club.
May 2
Deadline for Clubs to exercise Fifth-Year Option for players selected in the first round of the 2020 Draft.
May 5-8 or
May 12-15
Clubs may elect to hold their one three-day post-Draft rookie minicamp from Friday through Sunday or Saturday through Monday on one of the two weekends following the Draft.
May 15
Rookie Football Development Programs begin.
May 18-21
(Tentative)
NFLPA Rookie Premiere, TBD
May 22-24
Spring League Meeting, TBD
July
July 17
Deadline for teams that designated a Franchise Players to sign a multi-year contract extension is 4:00 PM ET. After this, player can only sign one-year contract that cannot be extended until after the team’s final regular season game.
August
August 3-6
Hall of Fame Weekend, Canton, Ohio
September
September 7
NFL Kickoff Game